Zinc (Zinc Oxide)
Zinc is an essential mineral of exceptional biologic importance. It is required by every cell in the body and is concentrated in the muscles, bones, skin, eyes and various other organs. Zinc is necessary for the proper functioning of the immune system. It protects the body form colds, flu and other infections. Some studies showed that people in the early stage of a cold that sucked on a zinc lozenge every few hours recovered 3 days earlier than those that were taking placebo’s.
The body does not produce zinc and thus depends on external sources for supply. Zinc is plentiful in fish and seafood as well as some meats. Severe deficiencies in Canada are rare.
Falling below the recommended daily intake of Zinc can lead to poor wound healing, more colds and flu, a decreased sense of taste and smell as well as skin problems such as acne, eczema and psoriasis. It can result in impaired blood sugar tolerance.
|Age||Estimated Average Requirements (EAR)||Recommended Daily Intake (RDI)|
|Women||all||6.5mg /day||8 mg/day|
|Men||all||12 mg/day||14 mg/day|
|Girls||14 -18 yr||6 mg/day||7 mg/day|
|Boys||14 -18 yr||11 mg/day||13 mg/day|
|Children||9 – 13 yr||5 mg/day||6 mg/day|
|Children||1-8 yr||3 mg/day||4 mg/day|
* Source: Nutrient Reference Values for Australia and New Zealand. National health and Medical Research Council
|Age||Maximum Recommended Dose
(from food and supplements)
|Children||14-18 yr||35 mg/day|
|Children||9-13 yr||25 mg/day|
|Children||4-8 yr||12 mg/day|
|Children||1-3 yr||7 mg/day|